Weightless sash construction



April 20 ,1926.

B E. BARTHOLOMEW WEIGHTLESS SASH CONSTRUCTION Filed July 25. 1924.

Patented vApr. 20, 1926.

UNITED STATES BERT E. BARTHOLOMEW, or PASADENA, oAL I FonN IA.

WEIGHTLESS SASH CONSTRUCTION.

Application filed July 25, 1924. Serial No. 728,131.

To all whom it may concern *Be it known that I, BERT E. BAnTI-roLo- Mnw,a .citizen of the United States, residing at Pasadena, in the county ofLos Angeles and Stateof California, have invented new and usefulImprovements in Weightless Sash Constructions, of which the following isaspecification. y

This invention relates to window construction wherein sashes may beretained in ele vated position without the use of sash cords, weightsand similar counterbalancing I devices.

An object of the invention is to provide a sash with a suitable rolleradapted to engage and bear upon the window frame, whereby the sash willbe urged against the opposite side of the window frame and frictionallyheld in position.

Another object of the invention is to provide a roller for a window sashadapted to engage the frame and provide means whereby the pressureexerted by the roller upon the window frame may be easily andconveniently varied.

Other objects will be made manifest in the following detaileddescription and distinctlypointed out in the appended claims, referencebeing had to the accomanying drawings for purposes of illustration,wherein: V

Figure 1 is a front elevation of a window frame having mounted thereinsashes in which my improvement is embodied,

Fig. 2 is a detail horizontal section taken substantially on the line2-2 of Fig. 1,

Fig. 3 is an enlarged detail elevation, parts being broken away, showingin section, taken substantially on the line 33 of Fig. 2, my improvementmounted therein, and

Fig. 4 is a side elevation of the housing which I employ, the rollerbeing mounted therein.

Referring to the accompanying drawings, in which similar referencecharacters designate similar parts, a window frame F is provided with apair of movable sashes having .frames S bearing my improved device,generally designated by the reference character '10. These devices arepreferably mounted upon the same side of the sash frame S at points nearthe top and bottom thereof.

Each device consists of a suitable housing 11 having a squared bodyportion 12 integral with a tubular extension 18. Within the body portion12 is provided a roller or wheel Struck out or pressed out from thebodyportion 12 are a pairof oppositely disposed J grooves or channl'slS,inwhich the ends of the spindles 15. areadapted to slide. The

ends of the struck-out or pressed-out channels 18 adjacent the windowframe F are.

turned over as at 19, so that the movement of the spindle 15 in thisdirection is limited at the side face of the sash frame Secured to thepost 17 and extending into the extension 13 is a spring 20 herein shownas being a coiled spring, which has its other end secured to anut 21.The extension 13 has its end'flush with the inner face of the sash frameS, and is provided with a turnedover lip 22, against which rests thehead 23 of a suitable screw 24, which screw 24 is threaded into the nut21. It is seen that the screw 24 may be turned by applying a suitabletool, such as a screw driver, through the opening in the end of theextension 13, thereby making the screw head 23 accessible from theexterior surface of the sash frame S. By rotating or twisting the screw24, the nut 21 will be caused to pass in the extension 13 toward thesash frame S, thereby increas- 14, preferably, having integralspindlesl15 16 which hasan integral ing the compression in the spring 20and increasing the pressure with which the roller 14 bears against thewindow frame F.

The assembly of the construction is quite simple, which consists ofsimply boring one or more holes in the sash frame S, inserting thecomplete device, and mounting the sash within the window frame. Thescrew 24 is then turned until the roller 1.4 is caused to bear upon thewindow frame F with the desired pressure, which causes the completeframe to bear against the opposite side of the window frame F with anequal amount of pressure, increasing the friction at that point andenabling the sash to remain in equilibrium at any point within thewindow frame. i

It is seen that I have provided a cheap, simple and durable device,which may be mounted ina sash frame and eliminate the use of sashweights.

It is to be understood that the drawings and the above detaileddescription are used for illustrative purposes only, and that Variouschanges in the detail of construction may be: made without departingfrom the housing having one end. fixed tosaid fork,

the other end of said spring being fixed to a nut, and a screwadaptedt-o'slidesaid nut in said housing, thereby varying compressionin, said spring.

2.. In a' Window sash frame, a housing extending laterally through theframe, a fork disposedfwithin said housing, a roller rotatable withinsaid fork adapted to engage the window frame, a nut slida-b'lewithinsaid housing, a spring secured: to the nut and fork, a screw threadedinto the nut, said screw having its head exposed at one. end of thehousing, and means for'maintaining the screw within the housing.

3. In a window sashframe, a housing extending laterally through theframe, a fork disposed within said housing adjacent the window frame. aroller having spindles rotatable in said fork, there being groovesformed upon the housing in which the ends of the spindles areslidable,anut slidable in the housing, a spring disposed between the nut andfork, and a screw threaded into the nut having its head exposed, theends ofthe housingbeing bent over to maintain the screw therein.

In testimony whereof I have signed my name to this specification.

BERT E; BARTHOLOMEVV.

